検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Anisotropic transport properties of NpPd$$_5$$Al$$_2$$

NpPd$$_5$$Al$$_2$$における異方的輸送特性

松田 達磨; 芳賀 芳範; 青木 大*; 本間 佳哉*; 立岩 尚之; 山本 悦嗣; 大貫 惇睦

Matsuda, Tatsuma; Haga, Yoshinori; Aoki, Dai*; Homma, Yoshiya*; Tateiwa, Naoyuki; Yamamoto, Etsuji; Onuki, Yoshichika

ZrNi$$_2$$Al$$_5$$-型結晶構造の異方的超伝導体NpPd$$_5$$Al$$_2$$について、電気抵抗及びホール効果測定を行った。電気抵抗の温度依存性は、異方的で、電流方向[001]では、すべての温度範囲で、[100]方向より大きい値を示す。高温では、近藤効果に特徴的な$$-log T$$の振る舞いを示す。ホール抵抗の磁場依存性は、55kOeまで線形な振る舞いを示す。ホール係数は、c軸方向で負の値を示すが、a軸方向では、温度の上昇とともに劇的に負から正の値へと変化することがわかった。

The anisotropic superconductor NpPd$$_5$$Al$$_2$$ with ZrNi$$_2$$Al$$_5$$-type tetragonal structure was studied by means of electrical resistivity and Hall effect in the normal state. The temperature dependence of electrical resistivity $$rho(T)$$ shows a large anisotropic behavior. The resistivity for $$J|$$[001] is larger than that for $$J|$$[100] in the whole temperature region. At high temperatures $$rho(T)$$ is proportional to $$-log T$$, which is characteristic behavior in Kondo effect. The field dependence of Hall resistivity $$rho_{rm H}$$ shows a linear dependence up to 55 kOe with a large slope for the field. The slope of $$rho_{rm H}$$ for field along $$c$$-axis is negative, but for field along $$a$$-axis, the slope dramatically changed from negative to positive with increasing temperature.

Access

:

- Accesses

InCites™

:

パーセンタイル:30.4

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.